Imperial Irrigation District
Political Subdivision electric utility · California · #167 of 3,199 U.S. utilities by customers · EIA utility #9216
Imperial Irrigation District is a political subdivision electric utility serving 165,797 customers in California. In 2025 it sold 3,395 gigawatt-hours of electricity for $627.71M in revenue, an average realized rate of 18.49¢ per kWh across all customer classes and 18.69¢ per kWh for residential customers. Its reported service territory covers 3 counties. EIA records its activities as: generation, transmission, buying transmission, distribution.
Customers, sales and rates by customer class (2025)
| Class | Customers | Sales (GWh) | Revenue | Avg realized rate | Share of sales |
|---|---|---|---|---|---|
| Residential | 142,916 | 1,857 | $346.94M | 18.69¢ | |
| Commercial | 22,074 | 1,467 | $267.65M | 18.24¢ | |
| Industrial | 807 | 70.6 | $13.12M | 18.59¢ | |
| Total | 165,797 | 3,395 | $627.71M | 18.49¢ |
Average realized rate = revenue divided by sales as reported on EIA Form 861. It blends fixed charges, demand charges and riders into one per-kWh figure; it is not the utility's tariff rate. Estimated residential bill assumes the average residential customer's actual 2025 usage (1,083 kWh/month).
Five-year trend
| Year | Customers | Sales (GWh) | Revenue | Residential rate |
|---|---|---|---|---|
| 2021 | 159,822 | 3,496 | $503.58M | 14.42¢ |
| 2022 | 161,630 | 3,584 | $561.68M | 15.60¢ |
| 2023 | 163,579 | 3,404 | $598.32M | 17.58¢ |
| 2024 | 164,802 | 3,645 | $660.30M | 17.91¢ |
| 2025 | 165,797 | 3,395 | $627.71M | 18.69¢ |
Reliability (2025)
Average outage time (SAIDI): 114 minutes per customer per year
Average outages (SAIFI): 0.72 per customer
Average restoration time (CAIDI): 158 minutes
As reported for California under the IEEE standard, with major event days included where the standard reports them. Lower is better; see the reliability rankings.
Energy supply (2025)
Net generation: 1,293 GWh
Wholesale power purchased: 2,572 GWh
Winter peak demand: 651 MW
Energy losses: 9.6% of energy handled
Meters & rooftop solar (2025)
Smart (AMI) meters: 100.0% of 167,529 meters
Customer-sited generation (net metering): 14,608 installations, 172.2 MW of capacity
Counties served
Imperial, CARiverside, CASan Diego, CA
Other large utilities in California
- Southern California Edison Co - 3,735,576 customers, residential 31.48¢
- Pacific Gas & Electric Co. - 2,008,682 customers, residential 37.52¢
- Los Angeles Department of Water & Power - 1,516,453 customers, residential 26.48¢
- San Diego Community Power - 939,547 customers, residential 15.76¢
- Clean Power Alliance of Southern Califor - 819,661 customers, residential 13.95¢
- Sunrun Inc. - 796,359 customers, residential 26.53¢
- Ava Community Energy - 724,515 customers, residential 14.48¢
- Sacramento Municipal Util Dist - 675,491 customers, residential 18.93¢
All California utilities and rates
Source: U.S. Energy Information Administration, Form EIA-861 2025 (filed by the utility; figures as published). Utility #9216 in the EIA frame.